Q: What are the prime factors of the number 39,679,752?

 A: 2, 3, 7, 19, 31, 401

Why are those the prime factors of the number 39,679,752?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 39,679,752

39,679,752
Factor Arrows
219,839,876
Factor Arrows
29,919,938
Factor Arrows
24,959,969
Factor Arrows
31,653,323
Factor Arrows
7236,189
Factor Arrows
1912,431
Factor Arrows
31401

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 19, 31, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 19 x 31 x 401 = 39,679,752

This can also be written as 23 x 31 x 71 x 191 x 311 x 4011 = 39,679,752

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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